# probability of discrete random variable

You are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:

Probability .333 .500 0 .167

number correct 0 1 2 3

What is the probability you get:

a) exactly one correct

b) at least one correct

c) exactly two correct

d) compute the mean, variance and standard deviation of this distribution

https://brainmass.com/statistics/probability/probability-discrete-random-variable-118602

#### Solution Preview

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you are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:

Probablity .333 .500 0 .167

number correct 0 1 ...

#### Solution Summary

The solution shows how to calculate the probability, mean and variance of discrete random variable.

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